package demo3;

/**
 * @Author 12629
 * @Description：
 */
class Money implements Cloneable{
    public double money = 12.5;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}
class Student implements Cloneable{
    public int age;
    public Money m = new Money();

    public Student(int age) {
        this.age = age;
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        //return super.clone();

        Student tmp = (Student) super.clone();
        tmp.m = (Money)this.m.clone();
        return tmp;
    }

    @Override
    public String toString() {
        return "Student{" +
                "age=" + age +
                '}';
    }
}
public class Test {
    public static void main(String[] args) throws CloneNotSupportedException {
        Student student1 = new Student(10);
        Student student2 = (Student)student1.clone();
        System.out.println(student1.m.money);//12.5
        System.out.println(student2.m.money);//12.5
        System.out.println("=======");
        student2.m.money = 100;
        System.out.println(student1.m.money);//12.5
        System.out.println(student2.m.money);//100


        //这不是拷贝  这是赋值！
        Student student3 = student1;


    }
}